Note 13 — The Lay of Helgi the Son of Hjorvarth
Henry Adams Bellows translation
Iron: the keels of Norse ships were sometimes fitted with iron “shoes” at bow and stern, but it is not certain that this practice much antedated the year 1000, and thus this line has raised some question as to the antiquity of this stanza, if not of the entire Hrimgertharmol, which may have been composed as late as the eleventh century.